Blyton, Enid <br/><br/>
Secret seven on the trail / 
by Enid Blyton and illustrated by George Brook 
 - London :  Hodder Children's Books,  1996. 
 - 137 p. :  ill. 
 - The Secret Seven .
<br/><br/><label>ISBN: </label>0340680946 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Juvenile fiction Detective and mystery stories  Children's stories 
<br/><br/><label>Dewey Class. No.: </label>823.912